CN207635836U - Energy-efficient automation tunnel oven - Google Patents
Energy-efficient automation tunnel oven Download PDFInfo
- Publication number
- CN207635836U CN207635836U CN201721434118.0U CN201721434118U CN207635836U CN 207635836 U CN207635836 U CN 207635836U CN 201721434118 U CN201721434118 U CN 201721434118U CN 207635836 U CN207635836 U CN 207635836U
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- kiln
- kiln body
- high temperature
- spray gun
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- 230000005855 radiation Effects 0.000 claims abstract description 48
- 239000007921 spray Substances 0.000 claims abstract description 46
- 238000010438 heat treatment Methods 0.000 claims abstract description 40
- 239000000919 ceramic Substances 0.000 claims abstract description 37
- 238000001816 cooling Methods 0.000 claims abstract description 35
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 32
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 26
- 229910052878 cordierite Inorganic materials 0.000 claims abstract description 25
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000779 smoke Substances 0.000 claims abstract description 25
- 239000001301 oxygen Substances 0.000 claims abstract description 24
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 24
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000010304 firing Methods 0.000 claims abstract description 17
- 238000005086 pumping Methods 0.000 claims abstract description 12
- 239000002737 fuel gas Substances 0.000 claims abstract description 11
- 239000003517 fume Substances 0.000 claims abstract description 10
- 238000000605 extraction Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 23
- 239000011449 brick Substances 0.000 claims description 19
- 239000004575 stone Substances 0.000 claims description 12
- 239000002918 waste heat Substances 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 11
- 229910010293 ceramic material Inorganic materials 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 9
- 230000009970 fire resistant effect Effects 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- 239000011120 plywood Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 239000011094 fiberboard Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000010583 slow cooling Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000000567 combustion gas Substances 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
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- 229920000742 Cotton Polymers 0.000 claims description 2
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- 239000003638 chemical reducing agent Substances 0.000 claims description 2
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- 239000000203 mixture Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 31
- 230000006872 improvement Effects 0.000 description 9
- 239000003921 oil Substances 0.000 description 7
- 238000005245 sintering Methods 0.000 description 7
- 238000009413 insulation Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000006213 oxygenation reaction Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000002196 Pyroceram Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000001754 anti-pyretic effect Effects 0.000 description 1
- 239000002221 antipyretic Substances 0.000 description 1
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- 238000005520 cutting process Methods 0.000 description 1
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- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
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- 230000000505 pernicious effect Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- 239000002937 thermal insulation foam Substances 0.000 description 1
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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- Furnace Details (AREA)
- Tunnel Furnaces (AREA)
Abstract
The utility model discloses a kind of energy-efficient automation tunnel ovens comprising kiln body, kiln car, kiln car pusher, heating system, combustion-supporting smoke evacuation system and Distributed Control System；The kiln body is equipped with preheating zone, zoneofoxidation, high temperature firing area and cooling zone；Kiln car includes underbody, high-temperature resistant silicon carbide/mullite/cordierite/ceramic legs, crossbeam, supporting beam three ply board layer；Heating system includes fuel gas pipeline, oxygen pipeline and the microwave thermal radiation spray gun set on the kiln body two side；The combustion-supporting smoke evacuation system includes fume extraction unit, UTILIZATION OF VESIDUAL HEAT IN unit and pumping temperature reducing unit；The Distributed Control System carries out automation control to each control unit in the kiln car pusher, heating system, combustion-supporting smoke evacuation system, the tunnel oven of the utility model has many advantages, such as that high degree of automation, energy consumption poor efficiency are high, temperature control is balanced, can solve that firing ceramics, foamed ceramic articles production capacity be low, the required artificial more and non-uniform technical problem of furnace chamber temperature.
Description
Technical field
The utility model is related to kiln technical fields, and in particular to a kind of energy-efficient energy-efficient automation tunnel
Kiln, it is suitable for ceramics, foamed ceramic high temperature firing kilns.
Background technology
Energy-efficient automation tunnel oven is a kind of equipment for firing ceramics, the energy-efficient automation tunnel oven of tradition
Required much more artificial and be single layer structure, production capacity is low, high energy consumption, being adjusted flexibly property of adaptation is poor, service life is short, output product ruler
Very little specification is small, mechanical automation degree is low, product stability is poor, temperature difference in kiln is big, is unable to meet production foamed ceramic and stone material
Foam the production requirement of big specification.Existing energy-efficient automation tunnel kiln structure is single, is heated with heat supply with material is cumbersome
System coordination is poor, does not reach performance fusion unification, and production cost cost is high, energy resource waste is big.
The utility model patent of Publication No. CN205316961U discloses a kind of microblogging being used to prepare foamed ceramic and adds
The energy-efficient automation tunnel oven of heat, the energy-efficient automation tunnel oven include kiln body shell, and kiln car is equipped in kiln body shell,
Kiln car is equipped with kiln car fireproof thermal insulation plate, and kiln car is equipped on kiln car fireproof thermal insulation plate and installs kiln furnitures, kiln car fireproof thermal insulation plate with
Column is set between kiln furnitures, and column is supported and fixes to kiln furnitures, and the kiln car of the energy-efficient automation tunnel oven is single layer
Structure, the foamed ceramic articles limited amount and energy consumption that can be carried are higher, and working efficiency is low.
Utility model content
Technical problem to be solved in the utility model is：A kind of energy-efficient automatic high-efficiency energy-saving automatic tunnel is provided
Road kiln, the energy-efficient automation tunnel oven can solve fired ceramic production capacity bottom, required artificial more and furnace chamber temperature
Non-uniform technical problem.
In order to solve the above technical problems, the technical solution of the utility model is：Energy-efficient automation tunnel oven, including kiln
Body, kiln car, kiln car pusher, heating system, combustion-supporting smoke evacuation system and Distributed Control System；Furnace chamber is equipped in the kiln body,
The kiln body head and the tail are respectively equipped with feed inlet and discharge port, and the kiln body is sequentially set from the feed inlet to the discharge port
There are preheating zone, zoneofoxidation, high temperature firing area and cooling zone；The pushing meanss push several end to end kiln cars to exist
Advance from feed inlet toward discharge port direction in the furnace chamber；The heating system is used for the heat supply into the kiln body；It is described combustion-supporting
Smoke evacuation system includes the UTILIZATION OF VESIDUAL HEAT IN list that the preheating zone is withdrawn into for the fume extraction unit of smoke evacuation, by the heat of the cooling zone
Pumping temperature reducing unit first and to the cooling zone slow cooling cooling of exhausting progress back to front；The Distributed Control System passes through center
Control device sends instruction and regulates and controls the electronic control actuator control heating system, kiln car push dress via control circuit
It sets and the combustion-supporting smoke evacuation system.
As an improvement mode, the kiln body includes being built by laying bricks or stones and being made pottery by mullite/cordierite light heat-insulating fire resistant brick
The kiln bottom and Yao Qiang of porcelain cellucotton composition；In the kiln wall top portion ecto-entad successively be equipped with by mullite/cordierite I-shaped brick,
The kiln top that mullite/cordierite refractory plate, ceramic beaverboard, ceramic fiber blanket and ceramic fibre loose wool are formed；The kiln body
Be externally provided with furnace shell, between the kiln wall and furnace shell be equipped with multi-layer ceramics fiberboard, multi-layer ceramics tapetum fibrosum and built by laying bricks or stones mullite/
Cordierite light heat-insulating fire resistant brick；The kiln car includes underbody, high-temperature resistant silicon carbide/mullite/cordierite/ceramic material
Column, high-temperature resistant silicon carbide/mullite/cordierite/ceramic material crossbeam, high-temperature resistant silicon carbide mullite/cordierite/pottery
The supporting beam of ceramic material, the high temperature resistant partition board of mullite/cordierite material and baffle；The silicon carbide column is set to vehicle body bottom
On seat, the silicon carbide crossbeam is set on the silicon carbide column, and it is horizontal that the silicon carbide supporting beam is set to the silicon carbide
The high temperature resistant partition board and baffle is arranged on the silicon carbide crossbeam, silicon carbide supporting beam top in Liang Shang, formed three layers by down toward
On high temperature resistant plate layer；Kiln car underbody described in supporting beam supporting beam by mullite light heat-insulating fire resistant brick, ceramic beaverboard,
Ceramic fiber blanket forms, and the kiln car is continuously equipped with several, several described kiln cars are end to end to be set in the furnace chamber
Form three layers of plate layer from the bottom to top.
As an improvement mode, the Distributed Control System includes the kiln car pusher, heating system, combustion-supporting
Induction feedback device, control device, infor-mation-carrying wire road, central control equipment and the electronic control actuator of smoke evacuation system.
As an improvement mode, the kiln car pusher includes multigroup pushing meanss, pushes rate control electricity
Machine and electronic control actuator, the pushing meanss will be several under the control of electronic control actuator and promotion rate controller
The end to end kiln car advances in the furnace chamber from feed inlet toward discharge port direction is dynamic.
As an improvement mode, the heating system includes preheating zone, zoneofoxidation and the height set on the kiln body
Microwave thermal radiation spray gun, fuel gas pipeline, oxygen pipeline and the electronic control actuator of warm firing zone；The fuel gas pipeline,
Oxygen pipeline, microwave thermal radiation spray gun are set to the kiln body two side, the gas inlet pipe and oxygen of the microwave thermal radiation spray gun
Gas air inlet pipe is connect with the fuel gas pipeline and oxygen pipeline respectively, and electronic control actuator is set to the microwave thermal radiation spray
On rifle, the combustion gas of the microwave thermal radiation spray gun, oxygen air inflow are regulated and controled, helping for the microwave thermal radiation spray gun is controlled
Oxygen combustion flame size；In the three plate layers being formed of continuously being joined end to end by the kiln car, in institute above the top plate layer
The side wall for stating kiln body both sides is respectively equipped with the microwave thermal radiation spray gun of one group of interlaced setting and the flame-observing hole；It is described
Side wall between top plate layer and the middle plate layer in the kiln body both sides is respectively equipped with described in one group of interlaced setting
Microwave thermal radiation spray gun and the flame-observing hole；In the side wall of the kiln body both sides between the middle plate layer and the lower plywood layer
It is respectively equipped with the microwave thermal radiation spray gun of one group of interlaced setting and the flame-observing hole；In institute below the lower plywood layer
State kiln body both sides side wall be respectively equipped with one group of interlaced setting setting the microwave thermal radiation spray gun and the sight fire
Hole, arbitrary neighbouring two groups of the microwave thermal radiation spray gun and the microwave thermal radiation spray gun of the flame-observing hole with it is described
Flame-observing hole is staggered.
As an improvement mode, the Distributed Control System by each adjusting control signal feed back to heat supply heating system
System, the control by the electronic control actuator of each heating element of heat supply heating system to microwave thermal radiation torch flame size
System regulates and controls furnace chamber internal temperature and air content, furnace chamber internal temperature is allowed to be formed respectively according to the plan of establishment of technological temperature curve
The section of a temperature gradient.
As an improvement mode, the inner wall of the kiln body is equipped with several for measuring the kiln body temperature
Thermocouple, the thermocouple, by connection, the temperature value incuded in real time are fed back to described with the Distributed Control System
Distributed Control System sends out the electronics control that instruction regulates and controls the microwave thermal radiation spray gun after Distributed Control System processing
Actuator processed adjusts flame size, to reach temperature control equilibrium purpose.
As an improvement mode, the combustion-supporting smoke evacuation system includes fume extraction unit, UTILIZATION OF VESIDUAL HEAT IN unit and pumping
Temperature reducing unit；The fume extraction unit includes air blower and electronic control actuator, the air inlet of the air blower and the furnace chamber
It is connected, air outlet connects chimney；The UTILIZATION OF VESIDUAL HEAT IN unit includes taking out air-heater, electronic control actuator, thermal cycle ventilation
Control valve and thermal cycle pipeline, the stove that the air inlet for taking out air-heater passes through cooling zone described in the thermal cycle pipeline connection
Chamber, the air outlet for taking out air-heater pass through the furnace chamber of preheating zone described in the thermal cycle pipeline connection, the thermal cycle pipeline
Equipped with the thermal cycle draft control valve and electronic control actuator；The pumping temperature reducing unit includes high temperature draught fan, cooling
Wind pipeline is set to electronic control actuator, the electronic control actuator of the thermal cycle pipeline in the high temperature draught fan,
The air inlet of the high temperature draught fan is connected to the suction opening at the top of the cooling zone furnace chamber, and the high temperature draught fan goes out
Air port is connected to the return air inlet at the top of the cooling zone furnace chamber, and the return air inlet is set to the front of the suction opening；It is described
Cooling pumping cells include two or more described high temperature draught fans, and the high temperature centrifugal induced draught fan is equipped with air-blower control
Valve, two or more high temperature draught fan tandems are set at the top of the cooling zone, the high temperature draught fan
Exhausting carries out slow cooling cooling back to front in the cooling zone.
As an improvement mode, further include hot wind cyclone circulation system, the hot wind cyclone circulation system include take out
Wind wind turbine, waste heat conveyance conduit, electronic control actuator, the air inlet of the induced draft fans are connected by the waste heat conveyance conduit
The logical hot wind outlet set on one upper lateral part of the kiln body, the air outlet of the induced draft fans are connected to by the waste heat conveyance conduit
Set on the backheat air port of another side lower part of the kiln body, it is staggered before and after hot wind outlet and backheat air port, the preheating zone, oxidation
Area, high temperature firing area are respectively equipped with the hot wind cyclone circulation system.
As an improvement mode, further include device for discharging, the device for discharging includes passing to institute by the discharge port
The conveying mechanism of feed inlet is stated, the conveying mechanism includes several metal rollers arranged side by side, and the metal roller is by frequency conversion
Decelerating motor passes through chain drive.
Use the technique effect acquired by above-mentioned technical proposal for：
Kiln car of the energy-efficient automation tunnel oven is three ply board layer structure, be a kind of three sheaf spaces in tunnel simultaneously
The energy-efficient automation tunnel kiln structure of operation, in list just there are one prodigious advantage in yield, kiln car pusher pushes away
It moves kiln car end to end successively and foamed ceramic is fired by preheating zone, zoneofoxidation, high temperature firing area and cooling zone, there is life
Produce the features such as period is short, high degree of automation, energy utilization rate are high, production cost is low, yield is big.The energy-efficient automation tunnel
Road kiln is helped the hot wind whirlwind kiln that oxygen burning is reached with combustion-supporting smoke evacuation system collective effect by heating system progress oxygenation
Inner cavity environment is by the insufficient discarded flue gas of burning caused by preheating zone, zoneofoxidation by high temperature firing area again via combustion-supporting smoke evacuation
System is discharged, make full use of the energy, reduction/elimination pernicious gas generation and discharge, reduce to the endangering of environment, green ring
It protects.The utility model can further improve the comprehensive qualified rate of product, effectively overcome tradition while realizing Fast Sintering
Product problem of Cracking when liquid fuel heat kiln Fast Sintering.
Hot wind cyclone circulation system is devised in the present invention, and the hot wind cyclone circulation system includes exhausting wind
Machine, waste heat conveyance conduit, collecting and distributing control wind pressure control valve, the air inlet of the induced draft fans are connected by the waste heat conveyance conduit
The logical hot wind outlet set on one upper lateral part of the kiln body, the air outlet of the induced draft fans are connected to by the waste heat conveyance conduit
Set on the backheat air port of another side lower part of the kiln body, it is staggered before and after hot wind outlet and backheat air port, induced draft fans can be by kiln
The hot wind of one upper lateral part of body is extracted into the lower part of the kiln body other side by wind conveying pipe road, and then the thermal current in kiln body can rise to again
The top of kiln body forms whirlwind in the inner cavity of kiln body, realizes the cycle of hot wind, keep the temperature in kiln body uniform.In addition, this reality
Distributed Control System is also applied with novel, the Distributed Control System sends instruction via circuit tune by central control equipment
Control electronic control actuator regulation and control heating system, conveying device and combustion-supporting smoke evacuation system, be the fluctuation of furnace chamber internal temperature become smaller, area
Between it is apparent, more stablize, improve the utilization rate of the energy, the qualification rate of product and quality.
Description of the drawings
Fig. 1 is the overall structure diagram of the energy-efficient automation tunnel oven of the utility model；
Fig. 2 is the internal structure schematic diagram of the kiln body of the energy-efficient automation tunnel oven of the utility model；
Fig. 3 is the partial structural diagram of the energy-efficient automation tunnel kiln body side surface of the utility model；
Fig. 4 is the enlarged drawing at A in Fig. 2；
In figure, 1- kiln bodies, the preheating zones 101-, 102- zoneofoxidations, 103- high temperature firings area, the cooling zones 104-, 106- chargings
Mouthful, 107- discharge ports, 2- air blowers, 3- pumping air-heaters, 4- high temperature draught fans, 5- chimneys, 61- columns, 62- crossbeams, 63- supports
Beam, 64- wheels, 71- fuel gas pipelines, 72- oxygen intake pipes, 8- kiln cars, 81- baffles, 82- high temperature dummy plates, 83- underbodies,
9- microwave thermal radiation spray guns, 91- gas inlet pipes, 92- oxygen intake pipes, 10- flame-observing holes, 11- kilns top, 13- kiln walls, 14- electricity
Son control actuator, 15- induced draft fans, 16- return air ducts.
Specific implementation mode
The utility model is further illustrated with reference to the accompanying drawings and examples.
As shown in Figure 1, Figure 2 and Fig. 4 is jointly shown, energy-efficient automatic high-efficiency energy-saving automatic tunnel oven, including kiln body
1, kiln car 8, kiln car pusher, heating system, combustion-supporting smoke evacuation system, Distributed Control System and device for discharging.
Be equipped with furnace chamber in kiln body 1,1 front of kiln body is equipped with feed inlet 106, and 1 rear portion of kiln body is equipped with discharge port 107, kiln body 1 from
Feed inlet 106 is to being sequentially with preheating zone 101, zoneofoxidation 102, high temperature firing area 103 and cooling zone between discharge port 107
104.Furnace chamber wall is equipped with high-temperature-resistant thermal-insulation thermal insulation layer, inside furnace chamber heat-resisting material be mullite material or cordierite material or
Pyroceram fibre material.
Kiln body 1 builds the kiln bottom formed with ceramic fiber cotton and Yao Qiang by laying bricks or stones including mullite/cordierite light heat-insulating fire resistant brick
13；It is equipped with successively by mullite/cordierite I-shaped brick, mullite/cordierite refractory plate, ceramics in 13 top ecto-entad of kiln wall
The kiln top 11 that fiberboard, ceramic fiber blanket and ceramic fibre loose wool are formed.Kiln body 1 is externally provided with furnace shell, kiln wall 13 and furnace shell it
Between be equipped with multi-layer ceramics fiberboard, multi-layer ceramics tapetum fibrosum and built mullite/cordierite light heat-insulating fire resistant brick by laying bricks or stones.Kiln car 8
Including underbody 83, the column 61 of high-temperature resistant silicon carbide/mullite/cordierite/ceramic material, high-temperature resistant silicon carbide/do not come
Crossbeam 62, the high-temperature resistant silicon carbide mullite/supporting beam 63 of cordierite/ceramic material, the Mo Lai of stone/cordierite/ceramic material
The high temperature resistant partition board 82 and baffle 81 of stone/cordierite material；Silicon carbide column 61 is set on underbody, silicon carbide crossbeam 62
It is set on the silicon carbide column, silicon carbide supporting beam 63 is set on silicon carbide crossbeam 62, in silicon carbide crossbeam 62, carbonization
High temperature resistant partition board 82 and baffle 81 is arranged in 63 top of silicon supporting beam, forms three layers of high temperature resistant plate layer supporting beam 63 from the bottom to top
Support beam 63.Underbody 83 is made of mullite light heat-insulating fire resistant brick, ceramic beaverboard, ceramic fiber blanket, and kiln car 8 is continuous
Equipped with several, end to end being set in furnace chamber of several kiln cars 8 forms three layers of plate layer from the bottom to top.
Several kiln cars 8 are continuously equipped in furnace chamber in kiln body 1.83 lower section of underbody is equipped with wheel 64, and wheel 64 is set
In on guide rail.Kiln car pusher, which is fixedly installed in furnace chamber, pushes kiln car 8 to move along the rail.Kiln car pusher includes multigroup
Pushing meanss, push rate control motor and electronic control actuator, the pushing meanss actuator and to be pushed away in electronic control
Under the control of dynamic rate controller by several end to end kiln cars 8 in the furnace chamber from feed inlet toward discharge port direction
It is dynamic to advance.
The steel track for carrying conveying kiln car 8 through energy-efficient automation tunnel oven can be set in kiln body 1, it is defeated
The power resources sent are the large-tonnage pressure pushing meanss (kiln car pusher) of multigroup cooperation, and (kiln car pusher) is rationally put
It sets and provides power in entire energy-efficient automation tunnel oven for the transmission conveying of kiln car 8, conveying bearing track must be in together
On one horizontal plane, ensure that the material Level Promoting on kiln car 8 advances.
Kiln car pusher includes multigroup pushing meanss, pushes rate control motor and electronic control actuator, is pushed
Device is under the control of electronic control actuator and promotion rate controller by several end to end kiln cars 8 in the furnace chamber
Advance from feed inlet toward discharge port direction is dynamic.
Pressure pushing meanss using track carrying, multigroup pressure pushing meanss push transmission, every group of pressure pushing meanss by
One oil pressure pump pumps hydrodynamic pressure pusher.Pressure pushing meanss include hydraulic pump, bearing block, oil pressure top cutting ferrule, passive bearing, master
Dynamic bearing, cycloidal pin decelerating motor.Kiln car 8 is pumped by oil pressure pump and moves oil pressure top, and the power on oil pressure top acts on the active branch of kiln car 8
It holds and kiln car 8 is pushed to advance, it is dynamic that cycloidal pin decelerating motor drives oil pressure pump to pump oil pressure jacking row.
Interior circulating conveyor kiln car 8 by predetermined speed from 106 catchment of kiln feed inlet to preheating zone 101, sintering zone,
Cooling zone 104 is moved, and firing process is finally completed.Conveying high temperature resistant kiln furnitures are driven using kiln car 8, are conveyed on high temperature resistant kiln furnitures again
Stone material foamed ceramic material is placed, conveying high temperature resistant kiln furnitures are made of high-temperature resistant silicon carbide material, can guarantee the high-quality of product.
Kiln body 1 is externally provided with device for discharging, and device for discharging includes the conveying mechanism that feed inlet 106 is passed to by discharge port 107, defeated
It includes several metal rollers arranged side by side to send mechanism, and metal roller passes through chain drive, conveying mechanism by variable frequency reducer motor
The push plate of the loaded material of discharge port output is delivered to the loading and unloading region of conveying mechanism, process is continuously run in push plate
In, material process up and down is carried out, the push plate is then sent to kiln import.
Heating system includes the fuel gas pipeline set on 103 two side of preheating zone 101, zoneofoxidation 102 and high temperature firing area
71, oxygen intake pipe road 72 and microwave thermal radiation spray gun 9, the gas inlet pipe 91 of microwave thermal radiation spray gun 9 and oxygen air inlet
Pipe 92 is respectively connected to fuel gas pipeline 71 and oxygen intake pipe road 72.Gas inlet pipe 91 presses 7 with oxygen intake pipe 71:3 ratio
Convey gas.Oxygen is conveyed by oxygen intake pipe 71, and oxygenation burning may be implemented, to keep fuel gas buring abundant, environmental protection section
Energy.Microwave thermal radiation spray gun is equipped with electronic control actuator 14, combustion of the electronic control actuator 14 to microwave thermal radiation spray gun 9
Gas, oxygen air inflow are regulated and controled, and control microwave thermal radiation spray gun 9 helps oxygen combustion flame size.Microwave thermal radiation spray gun 9 has
There is microwave thermal radiation silicon carbide burner, the operating voltage of automatic ignition device is 220/240V, frequency 50/60HZ, operating temperature
- 10/60 DEG C of range.Electricity automatically controls solenoid valve, combustion gas and airflow pipe, kiln inlet and outlet, kiln top 11 and furnace chamber inner wall
It is designed with micro-wave screening material layer.
Combustion-supporting smoke evacuation system includes fume extraction unit, UTILIZATION OF VESIDUAL HEAT IN unit and pumping temperature reducing unit, and fume extraction unit includes drum
Wind turbine 2 is connected with electronic control actuator, the air inlet of air blower 2 with furnace chamber, and the air outlet of air blower 2 connects chimney 5.
UTILIZATION OF VESIDUAL HEAT IN unit includes taking out air-heater 3, electronic control actuator, thermal cycle draft control valve and thermal cycle pipeline, takes out hot wind
For the air inlet of machine 3 by the furnace chamber of thermal cycle pipeline connection cooling zone 104, the air outlet for taking out air-heater 3 passes through thermal cycle pipeline
It is connected to the furnace chamber of preheating zone 101.Thermal cycle pipeline is equipped with thermal cycle draft control valve and actuator is controlled electronically.It is evacuated temperature reducing unit
Including high temperature draught fan 4, cooling wind pipeline and electronic control actuator, electronic control actuator are set in high temperature draught fan 4,
The air inlet of high temperature draught fan 4 be connected to the suction opening at the top of 104 furnace chamber of cooling zone, the air outlet of high temperature draught fan 4 and
Return air inlet connection at the top of 104 furnace chamber of cooling zone, return air inlet are set to the front of suction opening.Two or more high temperature
4 tandem of air-introduced machine is set to 101 top of preheating zone, and high temperature draught fan 4 in cooling zone 104 delayed back to front by exhausting
Cold cooling.
The energy-efficient automation tunnel oven further includes Distributed Control System, and Distributed Control System includes kiln car push dress
Set, the induction feedback device of heating system, combustion-supporting smoke evacuation system, control device, infor-mation-carrying wire road, central control equipment and
Actuator is controlled electronically.Distributed Control System sends instruction by central control equipment and is held via control circuit regulation and control electronic control
Row device controls heating system, kiln car pusher and combustion-supporting smoke evacuation system.
Distributed Control System controls heating system and combustion-supporting smoke evacuation system by control circuit.The survey of heating control system,
Temperature controlling point is in 1 top of kiln body and side, and using thermocouple temperature measurement, burner hearth is goed deep into thermocouple test side, close to the top of material
And side, it is connected with control element by compensating wire, the temperature feedback that thermocouple is measured to temperature controller, temperature controller is setting
Temperature and measured value the current signal for being converted to 4mA~20mA is compared and enlarged, export to power regulator and PLC, so
It is the angle of flow size or thyristor that power regulator and PLC adjust thyristor according to the size of temperature controller input signal afterwards
Turn-on time and microwave power supply switch motion change the warm area temperature to reach the size and switch that adjust heater element power
The height of degree, and the temperature value feeds back to temperature controller through thermocouple, constitutes the closed-loop control system of the warm area, and it is flat to reach temperature
Degree.Due to using advanced control technology and cold end electronic compensation circuitry in temperature controller, there is higher accuracy of temperature control.
Distributed Control System carries out kiln and automates temperature adjustment, and each adjusting control signal is fed back to heat supply heating system,
Control by the electronic control actuator 14 of each heating element of heat supply heating system to microwave thermal radiation torch flame size,
Regulate and control furnace chamber internal temperature and air content, furnace chamber internal temperature is allowed to form each temperature according to the plan of establishment of technological temperature curve
Spend the section of gradient.
The three ply board layer structure of three layers of kiln car 8 is included wherein, by automatic in kiln inner cavity both sides by heating system setting
The microwave thermal radiation spray 9 of solenoid valve control is carried out to heat.Distributed Control System setting controls heat supply in specific centralized control position
System and combustion-supporting smoke evacuation system.Combustion-supporting smoke evacuation system gives wind air quantity electromagnetic valve control point in 1 liang of outside of kiln body, air draft air quantity
Control be by change smoke exhaust fan working frequency frequency converter.
As shown in figure 3, the side wall above top plate layer in 1 both sides of kiln body is respectively equipped with one group of spaced microwave thermal spoke
Penetrate spray gun 9 and flame-observing hole 10；Side wall between top plate layer and middle plate layer in 1 both sides of kiln body is respectively equipped with one group of interval setting
Microwave thermal radiation spray gun 9 and flame-observing hole 10；Side wall between middle plate layer and lower plywood layer in 1 both sides of kiln body is respectively equipped with one
The spaced microwave thermal radiation spray gun 9 of group and flame-observing hole 10；Side wall below lower plywood layer in 1 both sides of kiln body is respectively equipped with one
The spaced microwave thermal radiation spray gun 9 of group and flame-observing hole 10.Arbitrary neighbouring two groups of microwave thermal radiation spray guns 9 are staggeredly set
It sets, arbitrary neighbouring two groups of flame-observing holes 10 are staggered.Arbitrary neighbouring two groups of microwave thermal radiation spray gun 9 and flame-observing hole
10 microwave thermal radiation spray gun 9 is staggered with flame-observing hole 10.Spaced high temperature heat radiation spray gun reduces natural gas and disappears
Usage amount is consumed, yield is also accordingly improved while energy conservation and environmental protection.Unilateral spray gun interlayer is uniformly dislocatedly distributed in triangle disposition,
Keep material to be processed antipyretic evenly in the heating period, product quality is more preferable.
The inner wall of kiln body 1 is equipped with several thermocouples for being used to measure temperature in the kiln body 1, thermocouple and the collection
It dissipates control system to be electrically connected, the temperature value that Distributed Control System is fed back according to thermocouple is controlled by the way that actuator 14 is controlled electronically
Microwave thermal radiation spray gun 9 heats, and the temperature value incuded in real time is fed back to Distributed Control System and handled by thermocouple, passes through
It is sent out after Distributed Control System processing and instructs the adjustment flame of electronic control actuator 14 of the microwave thermal radiation spray gun 9 big
It is small, to reach temperature control equilibrium purpose.
The energy-efficient automation tunnel oven further includes hot air circulating system, hot air circulating system include induced draft fans 15,
Waste heat conveyance conduit, electronic control actuator, the air inlet of induced draft fans 15 are communicated in kiln body 1 by waste heat conveyance conduit 16
The hot wind outlet of one upper lateral part, it is another that the air outlets of induced draft fans 15 by waste heat conveyance conduit 16 is communicated in the kiln body 1
It is staggered before and after the backheat air port of side lower part, hot wind outlet and backheat air port, induced draft fans 15 can be by the warm of 1 one upper lateral part of kiln body
Wind is extracted into the lower part of 1 other side of kiln body by return air duct 16, and then the thermal current in kiln body 1 can rise to the upper of kiln body 1 again
Portion forms whirlwind in the inner cavity of kiln body 1, realizes the cycle of hot wind, keep the temperature in kiln body 1 uniform, improve the profit of the energy
With the qualification rate of rate and product.Preheating zone 101, zoneofoxidation 102, high temperature firing area 103 are respectively equipped with above-mentioned hot air circulating system.
The utility model realizes the Uniformity of Temperature Field of ± 3 DEG C of the holding in 3000mm × 1200mm sintering section, and
Temperature uniformity of the simple microwave heating kiln and electric kiln in same region is generally in ± 5 DEG C or even bigger.This reality
With the novel consistency of performance for being effectively improved sintered products, and then improve the consistency of downstream product functional parameter.To burn
For tying foamed ceramic, runs each performance parameter index and be all significantly improved.The utility model is realizing Fast Sintering
While, the comprehensive qualified rate of product is can further improve, when effectively overcoming conventional liquid fuel heating kiln Fast Sintering
Product problem of Cracking.By taking sintered and foamed ceramics as an example, the utility model can carry the comprehensive qualified rate of product by original 90%
98% or more is risen to, and then directly improves the production capacity of single device.It can make product using the energy-efficient automation tunnel oven
Flexural strength can by 2.0 original~2.5MPa promoted to 2.8MPa or more, the compression strength of product can be by original
6.5MPa is promoted to 7.0MPa or more, improves the performance of product.
The energy-efficient automation tunnel oven belongs to continous way kiln, is burnt into three-layer efficient energy-saving automatic tunnel oven
Foamed ceramic, inner wall surface, which smears heat radiation coating, in kiln reduces energy consumption, brief period, and high degree of automation, production cost is low,
Yield is big, may be implemented to mass produce.In addition, the utility model is compared with prior art, pass through rationally matching for each section
Than, improve the availability of material to play energy-saving effect, while the destruction of environment be also reduced to accordingly it is minimum.This
Utility model decreases energy consumption usage amount while applicating energy-saving environment-friendly fuel natural gas, and yield is also accordingly carried
It is high.The three-decker of the energy-efficient automation tunnel oven can save basic material (such as steel construction, heat insulation foam and refractory brick
Deng) and kiln furnitures (kiln car 8), it can effectively reduce manufacturing cost.
The raising of the technical performance of the energy-efficient automation tunnel oven relative to original high efficiency energy-saving automatic tunnel oven
It can be shown with following table：
In short, the energy-efficient automation tunnel kiln of the utility model, using microwave and electric Hybrid Heating, kiln is easily grasped
Work, easy care, agglomerated material quality height, energy-efficient microwave and electric Hybrid Heating high temperature sintering, and in same heating interval
Interior, existing microwave heating also has electrical heating, and heating speed is fast, is heated evenly in furnace chamber, material processing quality is good.
Claims (10)
1. energy-efficient automation tunnel oven, which is characterized in that including kiln body, kiln car, kiln car pusher, heating system, help
Fire smoke evacuation system, Distributed Control System and device for discharging；Furnace chamber is equipped in the kiln body, the head and the tail of the kiln body are respectively equipped with
Feed inlet and discharge port, the kiln body is from the feed inlet to being sequentially with preheating zone, zoneofoxidation, high temperature the discharge port
Firing zone and cooling zone, the pushing meanss push several end to end kiln cars past from feed inlet in the furnace chamber
Advance in discharge port direction；The heating system is used for the heat supply into the kiln body；The combustion-supporting smoke evacuation system includes for discharging fume
Fume extraction unit, the heat of the cooling zone is withdrawn into the preheating zone UTILIZATION OF VESIDUAL HEAT IN unit and to the cooling zone by
The pumping temperature reducing unit of the slow cooling cooling of exhausting progress forward afterwards；The Distributed Control System is sent by central control equipment and is instructed
Regulate and control electronic control actuator via control circuit and controls the heating system, the kiln car pusher and the combustion-supporting smoke evacuation
System；The push plate for the loaded material that the discharge port exports is delivered to loading and unloading region by the device for discharging, in the company of push plate
In continuous operation process, material process up and down is carried out, the push plate is then sent to kiln import.
2. energy-efficient automation tunnel oven as described in claim 1, which is characterized in that the kiln body includes mullite/violet
Green stone light heat-insulating fire resistant brick builds the kiln bottom formed with ceramic fiber cotton and Yao Qiang by laying bricks or stones；In kiln wall top portion, ecto-entad is successively
Equipped with fine by mullite/cordierite I-shaped brick, mullite/cordierite refractory plate, ceramic beaverboard, ceramic fiber blanket and ceramics
Tie up the kiln top that loose wool is formed；The kiln body is externally provided with furnace shell, and mullite/cordierite has been built by laying bricks or stones between the kiln wall and the furnace shell
Light heat-insulating fire resistant brick is simultaneously equipped with multi-layer ceramics fiberboard and multi-layer ceramics tapetum fibrosum；The kiln car includes underbody, resistance to height
The column of warm silicon carbide/mullite/cordierite/ceramic material, the cross of high-temperature resistant silicon carbide/mullite/cordierite/ceramic material
Beam, the high-temperature resistant silicon carbide mullite/supporting beam of cordierite/ceramic material, the high temperature resistant partition board of mullite/cordierite material and
Baffle；The silicon carbide column is set on the underbody, and the silicon carbide crossbeam is set on the silicon carbide column,
The silicon carbide supporting beam supporting beam is set on the silicon carbide crossbeam, in the silicon carbide crossbeam, silicon carbide supporting beam
The high temperature resistant partition board and baffle is arranged in portion, forms three layers of high temperature resistant plate layer from the bottom to top；The kiln car underbody is not by
Come stone light heat-insulating fire resistant brick, ceramic beaverboard, ceramic fiber blanket composition, the kiln car is continuously equipped with several, several institutes
It states end to end being set in the furnace chamber of kiln car and forms three layers of plate layer from the bottom to top.
3. the energy-efficient automation tunnel oven as described in any of the above claim, which is characterized in that the collecting and distributing control system
System includes the kiln car pusher, heating system, the induction feedback device of combustion-supporting smoke evacuation system, control device, information transmission
Circuit, central control equipment and electronic control actuator.
4. the energy-efficient automation tunnel oven as described in any of the above claim, which is characterized in that the kiln car push dress
It sets including multigroup pushing meanss, rate control motor and electronic control actuator, the pushing meanss is pushed to be controlled electronically
It is under the control of actuator and promotion rate controller that several end to end kiln cars are past from feed inlet in the furnace chamber
Discharge port direction is dynamic to advance.
5. energy-efficient automation tunnel oven as described in claim 1, which is characterized in that the heating system includes being set to institute
State microwave thermal radiation spray gun, fuel gas pipeline, oxygen pipeline and the electronics in the preheating zone of kiln body, zoneofoxidation and high temperature firing area
Control actuator；The fuel gas pipeline, oxygen pipeline, microwave thermal radiation spray gun are set to the kiln body two side, the microwave
The gas inlet pipe and oxygen intake pipe of heat radiation spray gun are connect with the fuel gas pipeline and oxygen pipeline respectively, and electronic control is held
Row device is set on the microwave thermal radiation spray gun, is regulated and controled to the combustion gas of the microwave thermal radiation spray gun, oxygen air inflow,
Control the microwave thermal radiation spray gun helps oxygen combustion flame size；In three plates formed that continuously joined end to end by the kiln car
In layer, the side wall above the top plate layer in the kiln body both sides is respectively equipped with the microwave thermal of one group of interlaced setting
Radiate spray gun and the flame-observing hole；Side wall between the top plate layer and the middle plate layer in the kiln body both sides is set respectively
There are the microwave thermal radiation spray gun of one group of interlaced setting and the flame-observing hole；The middle plate layer and the lower plywood layer
Between side wall in the kiln body both sides be respectively equipped with the microwave thermal radiation spray gun of one group of interlaced setting and the sight
Fire hole；Side wall below the lower plywood layer in the kiln body both sides is respectively equipped with described in the setting of one group of interlaced setting
Microwave thermal radiation spray gun and the flame-observing hole, arbitrary neighbouring two groups of the microwave thermal radiation spray gun and the flame-observing hole
The microwave thermal radiation spray gun is staggered with the flame-observing hole.
6. energy-efficient automation tunnel oven as claimed in claim 5, which is characterized in that the Distributed Control System will be each
Adjusting control signal feeds back to heat supply heating system, passes through the electronic control actuator pair of each heating element of heat supply heating system
The control of microwave thermal radiation torch flame size regulates and controls furnace chamber internal temperature and air content, allow the furnace chamber internal temperature by
The section of each temperature gradient is formed according to the plan of establishment of technological temperature curve.
7. energy-efficient automation tunnel oven as claimed in claim 6, which is characterized in that if the inner wall of the kiln body is equipped with
The dry thermocouple for measuring the kiln body temperature, the thermocouple and the Distributed Control System by connection simultaneously
The temperature value incuded in real time is fed back into the Distributed Control System, sending out instruction after Distributed Control System processing adjusts
The electronic control actuator adjustment flame size for controlling the microwave thermal radiation spray gun, to reach temperature control equilibrium purpose.
8. the energy-efficient automation roller kilns as described in any of the above claim, which is characterized in that the combustion-supporting smoke evacuation system
System includes fume extraction unit, UTILIZATION OF VESIDUAL HEAT IN unit and pumping temperature reducing unit；The fume extraction unit includes air blower and electronic control
Actuator, the air inlet of the air blower are connected with the furnace chamber, and air outlet connects chimney；The UTILIZATION OF VESIDUAL HEAT IN unit includes
Air-heater, electronic control actuator, thermal cycle draft control valve and thermal cycle pipeline are taken out, the air inlet for taking out air-heater passes through
The furnace chamber of cooling zone described in the thermal cycle pipeline connection, the air outlet for taking out air-heater pass through the thermal cycle pipeline connection
The furnace chamber of the preheating zone, the thermal cycle pipeline are equipped with the thermal cycle draft control valve and electronic control actuator；It is described
Pumping temperature reducing unit includes high temperature draught fan, cooling wind pipeline and electronic control actuator, the electronics control of the thermal cycle pipeline
Actuator processed is set in the high temperature draught fan, the air inlet of the high temperature draught fan at the top of the cooling zone furnace chamber
Suction opening connection, the air outlet of the high temperature draught fan be set to the cooling zone furnace chamber at the top of return air inlet be connected to, it is described
Return air inlet is set to the front of the suction opening；The cooling pumping cells include two or more described high temperature draught fans,
The high temperature centrifugal induced draught fan is equipped with air-blower control valve, and two or more high temperature draught fan tandems are set to
At the top of the cooling zone, exhausting carries out slow cooling cooling to the high temperature draught fan back to front in the cooling zone.
9. the energy-efficient automation roller kilns as described in any of the above claim, which is characterized in that further include hot wind whirlwind
The circulatory system, the hot wind cyclone circulation system include induced draft fans, waste heat conveyance conduit, electronic control actuator, the pumping
The air inlet of wind wind turbine is communicated in the hot wind outlet of one upper lateral part of the kiln body, the exhausting by the waste heat conveyance conduit
The air outlet of wind turbine is communicated in the backheat air port of another side lower part of the kiln body, hot wind outlet by the waste heat conveyance conduit
It is staggered with before and after backheat air port, the preheating zone, zoneofoxidation, high temperature firing area are respectively equipped with hot wind cyclone circulation system
System.
10. the energy-efficient automation roller kilns as described in any of the above claim, which is characterized in that the device for discharging packet
The conveying mechanism that the feed inlet is passed to by the discharge port is included, the conveying mechanism includes several metallic rolls arranged side by side
Cylinder, the metal roller pass through chain drive by variable frequency reducer motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721434118.0U CN207635836U (en) | 2017-10-31 | 2017-10-31 | Energy-efficient automation tunnel oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721434118.0U CN207635836U (en) | 2017-10-31 | 2017-10-31 | Energy-efficient automation tunnel oven |
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| Publication Number | Publication Date |
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| CN207635836U true CN207635836U (en) | 2018-07-20 |
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ID=62859420
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307431A (en) * | 2018-08-30 | 2019-02-05 | 中国电子科技集团公司第四十八研究所 | A hybrid heating industrial kiln |
| CN110986579A (en) * | 2019-12-21 | 2020-04-10 | 深圳东忠窑炉有限公司 | Sintering kiln |
| CN114990328A (en) * | 2022-04-14 | 2022-09-02 | 北京巨亚国际环境科技股份有限公司 | Tunnel type mineral powder sintering equipment and sintering method |
-
2017
- 2017-10-31 CN CN201721434118.0U patent/CN207635836U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307431A (en) * | 2018-08-30 | 2019-02-05 | 中国电子科技集团公司第四十八研究所 | A hybrid heating industrial kiln |
| CN109307431B (en) * | 2018-08-30 | 2020-10-27 | 中国电子科技集团公司第四十八研究所 | A hybrid heating industrial kiln |
| CN110986579A (en) * | 2019-12-21 | 2020-04-10 | 深圳东忠窑炉有限公司 | Sintering kiln |
| CN114990328A (en) * | 2022-04-14 | 2022-09-02 | 北京巨亚国际环境科技股份有限公司 | Tunnel type mineral powder sintering equipment and sintering method |
| CN114990328B (en) * | 2022-04-14 | 2024-06-11 | 北京巨亚国际环境科技股份有限公司 | Tunnel type mineral powder sintering equipment and sintering method |
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